The present invention relates to light emitting materials comprising novel ortho-metalated transition metal complexes [ĈN]
2
M[N̂N] comprising two orthometalated ligands (ĈN ligands) and a neutral bidentate bipyridine ligand (N̂N). Surprisingly, it has been found that when the metal binds both orthometalated chelate ĈN ligands and a neutral bidentate bipyridine ligand (N̂N), these ligands participate in the emission process, thus greatly improving the red emission efficiency of complexes [ĈN]
2
M[N̂N]. The present invention further relates to the use of such light emitting materials and an organic light emitting device comprising such light emitting material.
本发明涉及包括新型正
金属化的过渡
金属配合物[ĈN]2M[N̂N]的
发光材料,该配合物包括两个正
金属化
配体(ĈN
配体)和一个中性双齿联
吡啶配体(N̂N)。令人惊讶的是,当
金属同时结合两个正
金属化螯合ĈN
配体和一个中性双齿联
吡啶配体(N̂N)时,这些
配体参与发射过程,从而大大提高了配合物[ĈN]2M[N̂N]的红色发射效率。本发明进一步涉及使用这种
发光材料和包括这种
发光材料的有机发光器件。